Smart solar generation system

PURPOSE: An intelligent solar power generating system is provided to rapidly detect defects of a solar cell string by installing a voltage detecting unit for detecting a ground fault and an electric leakage in the solar cell string. CONSTITUTION: A solar cell array unit(100) comprises a plurality of solar cell strings(110). Each solar cell string includes a plurality of solar cell modules(120) which are serially connected. A connection board(200) combines DC power from the solar cell strings and outputs the combined power to an inverter(300). The connection board includes a voltage detecting unit(240) which is individually connected to the solar cell string. The voltage detecting unit detects a voltage property of the solar cell string.